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Second K-wire insertion, outlet projection

Second K-wire insertion, outlet projection

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Background Percutaneous iliosacral screw fixation is a minimally invasive technique for the treatment of unstable pelvic injuries involving the posterior ring. Nevertheless, screw malposition may result in dangerous complications involving injury to adjacent neurological structures. This study was conducted in order to evaluate the first results of...

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... tant to regulate the X-ray machine position, depending on the duration of the operation. The K-wire is inserted to control X-ray proximal to the S1 level. We perform a dorsolateral 1-2 cm skin incision. Once the guide pin is inserted, its safety is confirmed doing inlet and outlet radiographs ( Figs. 1 and 2). Adjacently we insert another K-wire (Fig. 3). The K-wire must pass the SI joint, the wires tip should be at the the center of the sacrum body at inlet projection and in a half-way proximal S1 nerve root at outlet projection (Fig. 2). We started doing this procedure using non-canulated screws 6.5 mm in diam- eter, but now we use canulated screws with spacers 7.3 or 8.3 mm in ...

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Article
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Objectives The objective of this review was to present a thorough overview of the complications associated with conventional percutaneous sacroiliac screw fixation to identify areas for improvement in surgical technique and patient selection. Methods PubMed/Medline, Web of Science, Embase, Ovid, Cochrane library, and Google Scholar were systematically searched for original human studies reporting on complications of conventional percutaneous sacroiliac fixation in traumatic pelvic ring injuries from January 1, 2000, to April 30, 2022. The main meta-analysis was based on the random effect model to pool all complications reported in the included studies. The results were reported as weighted proportions with 95% confidence intervals. This review was conducted in line with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Results A total of 56 studies with 3644 screws (2871 procedures) met the inclusion criteria, with a mean age of 40.5 years. The most frequently reported complications were screw malposition with a weighted proportion of 6% (95% CI: 5–9%) and involved 189 out of 3644 screws, persistent pain following the procedure with a weighted proportion of 3% (95% CI: 2–4%) and affected 98 out of 2871 patients, and nerve injury, which had a weighted proportion of 2% (95% CI: 1–3%) and was observed in 41 out of 2871 procedures. The L5 and S1 nerve roots were more frequently affected. Revision surgery was required for 184 out of 2871 patients with a weighted proportion of 5% (95% CI: 3–7%). The primary reason for the revision was persistent pain after the initial procedure, which affected 74 out of 184 patients, with a weighted proportion of 2.0% (95% CI: 1.2–2.8%). Conclusions This study showed that screw malposition, the need for revision surgery, persistent pain, and nerve injuries were the most frequent complications following conventional percutaneous sacroiliac screw fixation. However, these results must be interpreted in context due to confounding factors, including the lack of high-quality studies and the absence of uniformity in defining some complications across studies.